Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7351509 | Toner | Nobuyuki Okubo, Tsutomu Onuma, Shinichiro Abe, Koji Nishikawa | 2008-04-01 |
| 7306889 | Process for producing toner, and toner | Nobuyuki Okubo, Tsutomu Onuma, Shinichiro Abe, Koji Nishikawa | 2007-12-11 |
| 7288354 | Toner | Nobuyuki Okubo, Tsutomu Onuma, Hideto Iida, Koji Nishikawa, Takashige Kasuya | 2007-10-30 |
| 7273686 | Toner | Tsutomu Onuma, Nobuyuki Okubo, Hideto Iida, Takashige Kasuya, Koji Nishikawa | 2007-09-25 |
| 6881527 | Toner, and process cartridge | Hirohide Tanikawa, Hiroshi Yusa, Takashige Kasuya, Yoshihiro Ogawa, Hideto Iida +1 more | 2005-04-19 |
| 6875549 | Dry toner, toner production process, image forming method and process cartridge | Katsuhisa Yamazaki, Hirohide Tanikawa, Hiroshi Yusa, Takashige Kasuya, Yoshihiro Ogawa | 2005-04-05 |